Proactive User Authentication for Facilitating Subsequent Resource Access Across Multiple Devices

1. A computer-implemented method comprising: validating, via at least one authentication service connected to a first user device via network connectivity, an authentication result received via the first user device; generating, via the at least one authentication service in response to validating the authentication result, a proof of authentication that relates to the authentication performed via the first user device; outputting, via the at least one authentication service, the proof of authentication to the first user device via the network connectivity; outputting, via the at least one authentication service to a second user device via network connectivity, a request for cryptographic information in response to a request to access a protected resource by the second user device; obtaining, via the second user device from the first user device, wherein the first user device lacks network connectivity, at least a portion of the proof of authentication; receiving, via the at least one authentication service from the second user device via network connectivity, cryptographic information comprising the at least a portion of the proof of authentication output to the first user device; validating, via the at least one authentication service, the cryptographic information received from the second user device against the proof of authentication output by the at least one authentication service to the first user device; and granting, via the at least one authentication service to the second user device, access to the protected resource in response to validating the cryptographic information received from the second user device against the proof of authentication output by the at least one authentication service to the first user device; wherein the method is performed by at least one processing device comprising a processor coupled to a memory.

2. The computer-implemented method of claim 1 , further comprising: storing the proof of authentication.

3. The computer-implemented method of claim 1 , wherein the proof of authentication comprises a quick response code.

4. The computer-implemented method of claim 1 , wherein the proof of authentication comprises one or more temporal parameters.

5. The computer-implemented method of claim 4 , wherein the one or more temporal parameters define a duration of time during which the proof of authentication remains valid.

6. The computer-implemented method of claim 1 , wherein the proof of authentication comprises a set of alphanumeric data.

7. The computer-implemented method of claim 1 , wherein the proof of authentication comprises a set of image data.

8. The computer-implemented method of claim 1 , wherein the proof of authentication comprises a set of audio data.

9. The computer-implemented method of claim 1 , wherein the proof of authentication comprises a set of video data.

10. The computer-implemented method of claim 1 , further comprising: prompting, in response to receiving the request to access the protected resource from the second user device, the second user device to retrieve the proof of authentication from the first user device.

11. The computer-implemented method of claim 1 , further comprising: creating, in response to validating the authentication result received via the first user device, an authentication session for the user.

12. The computer-implemented method of claim 11 , wherein the proof of authentication comprises information pertaining to the authentication session.

13. The computer-implemented method of claim 1 , wherein the first user device comprises one of a desktop computer, a laptop computer, a tablet, and a mobile device.

14. The computer-implemented method of claim 1 , wherein the second user device comprises one of a desktop computer, a laptop computer, a tablet, and a mobile device.

15. A non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device causes the at least one processing device: to validate, via at least one authentication service connected to a first user device via network connectivity, an authentication result received via the first user device; to generate, via the at least one authentication service in response to validating the authentication result, a proof of authentication that relates to the authentication performed via the first user device; to output, via the at least one authentication service, the proof of authentication to the first user device via the network connectivity; to output, via the at least one authentication service to a second user device via network connectivity, a request for cryptographic information in response to a request to access a protected resource by the second user device; to obtain, via the second user device from the first user device, wherein the first user device lacks network connectivity, at least a portion of the proof of authentication; to receive, via the at least one authentication service from the second user device via network connectivity, cryptographic information comprising the at least a portion of the proof of authentication output to the first user device; to validate, via the at least one authentication service, the cryptographic information received from the second user device against the proof of authentication output by the at least one authentication service to the first user device; and to grant, via the at least one authentication service to the second user device, access to the protected resource in response to validating the cryptographic information received from the second user device against the proof of authentication output by the at least one authentication service to the first user device.

16. The non-transitory processor-readable storage medium of claim 15 , wherein the proof of authentication comprises one or more temporal parameters.

17. The non-transitory processor-readable storage medium of claim 15 , wherein the program code when executed by the at least one processing device causes the at least one processing device: to prompt, in response to receiving the request to access the protected resource from the second user device, the second user device to retrieve the proof of authentication from the first user device.

18. An apparatus comprising: at least one processing device comprising a processor coupled to a memory; the at least one processing device being configured: to validate, via at least one authentication service connected to a first user device via network connectivity, an authentication result received via the first user device; to generate, via the at least one authentication service in response to validating the authentication result, a proof of authentication that relates to the authentication performed via the first user device; to output, via the at least one authentication service, the proof of authentication to the first user device via the network connectivity; to output, via the at least one authentication service to a second user device via network connectivity, a request for cryptographic information in response to a request to access a protected resource by the second user device; to obtain, via the second user device from the first user device, wherein the first user device lacks network connectivity, at least a portion of the proof of authentication; to receive, via the at least one authentication service from the second user device via network connectivity, cryptographic information comprising the at least a portion of the proof of authentication output to the first user device; to validate, via the at least one authentication service, the cryptographic information received from the second user device against the proof of authentication output by the at least one authentication service to the first user device; and to grant, via the at least one authentication service to the second user device, access to the protected resource in response to validating the cryptographic information received from the second user device against the proof of authentication output by the at least one authentication service to the first user device.

19. The apparatus of claim 18 , wherein the proof of authentication comprises one or more temporal parameters.

20. The apparatus of claim 18 , wherein the at least one processing device being further configured: to prompt, in response to receiving the request to access the protected resource from the second user device, the second user device to retrieve the proof of authentication from the first user device.